1099997368511 has 4 divisors (see below), whose sum is σ = 1135481154624. Its totient is φ = 1064513582400.

The previous prime is 1099997368501. The next prime is 1099997368513. The reversal of 1099997368511 is 1158637999901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1099997368511 - 2³⁴ = 1082817499327 is a prime.

It is a super-2 number, since 2×1099997368511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099997368513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17741893010 + ... + 17741893071.

It is an arithmetic number, because the mean of its divisors is an integer number (283870288656).

Almost surely, 2^{1099997368511} is an apocalyptic number.

1099997368511 is a deficient number, since it is larger than the sum of its proper divisors (35483786113).

1099997368511 is an equidigital number, since it uses as much as digits as its factorization.

1099997368511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35483786112.

The product of its (nonzero) digits is 33067440, while the sum is 68.

The spelling of 1099997368511 in words is "one trillion, ninety-nine billion, nine hundred ninety-seven million, three hundred sixty-eight thousand, five hundred eleven".